.footer{
  padding: 50rpx 0;
  text-align: center;
  background: #ffffff;
  color: #4c4d4e;
  font-size: 30rpx;
  line-height: 1.8em;
}
.kefu{
  width: 100rpx;
  height: 100rpx;
  background: #bda066;
  position: fixed;
  z-index: 10;
  bottom: 100rpx;
  right: 60rpx;
  border-radius: 50%;
  box-shadow: 0 0 20rpx rgba(189,160,102,0.8);
  .btn{
    position: relative;
    z-index: 2;
    opacity: 0;
  }
  .pic{
    width: 90%;
    height: 90%;
    position: absolute;
    margin: auto;
    left: 0;
    right: 0;
    bottom: 0;
    top: 0;
  }
  .line{
    width: 100%;
    height: 100%;
    border: 2px solid #bda066;
    position: absolute;
    top: 0;
    left: 0;
    border-radius: 50%;
    animation: emit 1s infinite;
   }
}
@keyframes emit{
  0%{}
  100%{
    border-width: 1px;
    opacity: 0;
    transform: scale(1.5);
  }
}